CHAPTER 4 ECHO PATTERNS
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4.3 Plankton Layers
Layers of concentrated planktons of up to a few meters thick appear as a cloud of dots.
They tend to rise up to the surface in the day and fall to deeper waters in the night.
Plankton
4.4 Air Bubbles
Air bubbles in the water can block sound waves, causing gaps in the water bottom.
Gaps
Gaps
4.5 Side-Lobe Echoes
Some of the sonar beam escapes the sides, called side lobes. Echoes reflected from side
lobes appear as shadows parallel to the water bottom.
False images
Summary of Contents for CS 1522
Page 1: ...CS 1522 Professional Fishfinder Owner s Manual...
Page 44: ...CHAPTER 2 GETTING STARTED 42...
Page 72: ...CHAPTER 5 APPENDICES 70...
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